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325 条记录 (耗时 0.036 秒)

    Method and apparatus for detecting radial tilt
    41.
    发明授权
    Method and apparatus for detecting radial tilt 有权
    用于检测径向倾斜的方法和装置

    公开(公告)号：US07349311B2

    公开(公告)日：2008-03-25

    申请号：US10617256

    申请日：2003-07-11

    申请人： Byung-in Ma ,  Kwan-joon Kim ,  In-sik Park ,  Byoung-ho Choi

    发明人： Byung-in Ma ,  Kwan-joon Kim ,  In-sik Park ,  Byoung-ho Choi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/133 ,  G11B7/0943 ,  G11B7/0956

    摘要： A method of, and an apparatus for detecting a radial tilt of a disc. Phases of summed signals obtained from signals that external light-receiving units of an octant photo diode receive are compared to generate an external phase comparison signal Do. Phases of other summed signals obtained from other signals, that internal light-receiving units of the octant photo diode receive, are compared to generate the internal phase comparison signal Di. The radial tilt is detected based on the internal and external phase comparison signals Di and Do obtained when a laser beam crosses a track formed the disc. Thus, the radial tilt can be more precisely detected.

    摘要翻译： 一种用于检测盘的径向倾斜的方法和装置。 比较从八分之一光电二极管的外部光接收单元接收的信号获得的相加信号相位，以产生外部相位比较信号Do。 从其他信号获得的其他相加信号的相位，即八分之一光电二极管的内部光接收单元接收，并产生内部相位比较信号Di。 基于当激光束穿过形成盘的轨道时获得的内部和外部相位比较信号Di和Do来检测径向倾斜。 因此，可以更精确地检测径向倾斜。

    Apparatus and method for generating tracking error signal
    42.
    发明授权
    Apparatus and method for generating tracking error signal 失效
    用于产生跟踪误差信号的装置和方法

    公开(公告)号：US07035178B2

    公开(公告)日：2006-04-25

    申请号：US10337361

    申请日：2003-01-07

    申请人： Byung-in Ma ,  Young-man Ahn ,  In-sik Park ,  Kwan-joon Kim ,  Byoung-ho Choi

    发明人： Byung-in Ma ,  Young-man Ahn ,  In-sik Park ,  Kwan-joon Kim ,  Byoung-ho Choi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0901 ,  G11B7/085 ,  G11B7/0948 ,  G11B7/131

    摘要： An apparatus for and a method of producing a push-pull tracking error signal in an optical disc system having four light-receiving sections A, B, C, and D arranged in a radial direction of the optical disc. Pairs of signals PA, PB, PC and PD, corresponding to light receiving sections A, B, C and D, respectively are differentially combined to provide differential signals. One differential signal is filtered, amplified and differentially combined with another differential signal to output a tracking error signal. Accordingly, distortion of the tracking error signal during jumping to a desired track and distortion of the tracking error signal due to a defect of the optical disc are prevented.

    摘要翻译： 在具有沿光盘的径向布置的四个光接收部分A，B，C和D的光盘系统中产生推挽跟踪误差信号的装置和方法。 对应于光接收部分A的信号对P，P，B，P，C和D， B，C和D分别差分组合以提供差分信号。 一个差分信号被滤波，放大并与另一个差分信号差分地组合以输出跟踪误差信号。 因此，防止了跳跃到期望的轨道期间的跟踪误差信号的失真以及由于光盘的缺陷导致的跟踪误差信号的失真。

    Physical identification data addressing method using wobble signal, wobble address encoding circuit, method and circuit for detecting wobble address, and recording medium therefor
    44.
    发明授权
    Physical identification data addressing method using wobble signal, wobble address encoding circuit, method and circuit for detecting wobble address, and recording medium therefor 失效
    使用摆动信号的物理识别数据寻址方法，摆动地址编码电路，用于检测摆动地址的方法和电路及其记录介质

    公开(公告)号：US06813230B1

    公开(公告)日：2004-11-02

    申请号：US09704656

    申请日：2000-11-03

    申请人： Jung-wan Ko ,  In-sik Park ,  Kyung-geun Lee ,  Du-seop Yoon ,  Seong-sin Joo ,  Jae-seong Shim ,  Byoung-ho Choi ,  Byung-in Ma ,  Tatsuhiro Otsuka ,  Yong-jin Ahn

    发明人： Jung-wan Ko ,  In-sik Park ,  Kyung-geun Lee ,  Du-seop Yoon ,  Seong-sin Joo ,  Jae-seong Shim ,  Byoung-ho Choi ,  Byung-in Ma ,  Tatsuhiro Otsuka ,  Yong-jin Ahn

    IPC分类号： G11B700

    CPC分类号： G11B27/24 ,  G11B7/00718 ,  G11B7/24082 ,  G11B2220/216 ,  G11B2220/2562 ,  G11B2220/2575

    摘要： A physical identification data (PID) addressing method using a wobble signal, a wobble address encoding circuit, a method and circuit for detecting the wobble address and a recording medium therefor. Groove address information indicating physical identification information is phase modulated using a wobble clock signal and recorded in one of the two walls of a groove track, and land address information is phase modulated using a wobble clock signal obtained by shifting the phase of the former wobble clock signal and recorded in the other wall. That is, address information is phase modulated and recorded in each track using the wobbles having a phase difference of 90° between adjacent tracks so that a sum of wobble signals from the adjacent tracks can be a quadrature phase shift keying (QPSK) signal. Therefore, more data can be recorded in the recording medium, and since an interval in which a wobble signal disappears is not caused, recovery of a wobble clock signal can be advantageously performed.

    摘要翻译： 使用摆动信号的物理识别数据（PID）寻址方法，摆动地址编码电路，用于检测摆动地址的方法和电路及其记录介质。 表示物理识别信息的槽地址信息使用摆动时钟信号进行相位调制，并记录在凹槽轨迹的两个壁之一中，并且使用通过使前一个摆动时钟的相位偏移而获得的摆动时钟信号来对陆地地址信息进行相位调制 信号并记录在另一面墙上。 也就是说，使用相邻轨道之间具有90°的相位差的摆动来将地址信息相位调制并记录在每个轨道中，使得来自相邻轨道的摆动信号的和可以是正交相移键控（QPSK）信号。 因此，可以在记录介质中记录更多的数据，并且由于不会产生摆动信号消失的间隔，所以可以有利地进行摆动时钟信号的恢复。

    OPTICAL PICKUP USING TWO LASER BEAM SOURCES OF DIFFERENT WAVELENGTHS FOR AN OPTICAL DISK DRIVE AND A CONVERTER TO OPTIMIZE A LIGHT BEAM REFLECTED OFF AN OPTICAL DISC FOR DETECTION BASED ON REFLECTED LIGHT BEAM WAVELENGTH
    48.
    发明授权
    OPTICAL PICKUP USING TWO LASER BEAM SOURCES OF DIFFERENT WAVELENGTHS FOR AN OPTICAL DISK DRIVE AND A CONVERTER TO OPTIMIZE A LIGHT BEAM REFLECTED OFF AN OPTICAL DISC FOR DETECTION BASED ON REFLECTED LIGHT BEAM WAVELENGTH 失效
    光学拾取使用两个不同波长的激光束光源，用于光盘驱动器和转换器，以根据反射的光束波长优化用于检测光源的光束。

    公开(公告)号：US07079471B1

    公开(公告)日：2006-07-18

    申请号：US09442095

    申请日：1999-11-17

    申请人： Chong-sam Chung ,  Chul-woo Lee ,  In-sik Park

    发明人： Chong-sam Chung ,  Chul-woo Lee ,  In-sik Park

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1376 ,  G11B7/1353 ,  G11B2007/0006

    摘要： First and second laser beam sources generate first and second laser beams of different wavelengths, respectively. A first collimating lens diverges the first laser beam at a predetermined angle so as to permit a fracture surface aberration of the first laser beam to fall below a predetermined value when the first laser beam generated from the first laser beam source is collected on the signal layer of the optical disk. A light receiving lens collects the laser beam reflected from the signal layer of the optical disk on a photo diode in the form of an optical spot of a predetermined size. A holographic lens has a pattern by which the first laser beam is converted into parallel rays so that the size of a spot of the first laser beam becomes identical with the size of a spot of the second laser beam as projected on the detecting section. The pattern of the holographic lens has a concentric annular concave-convex portion in which a plurality of annular prominences and depressions are arranged, and the depression and the prominence have a width which is gradually decreased from a center toward a most outer circumference of the concentric annular concave-convex portion. Further, an inner surface of each prominence has a step-like shape formed with at least one step. Preferably, the number of the step ranges from three to five. Accordingly, diameters of the optical spots of the two laser beams of different wavelengths are almost identical when the laser beams are transmitted through the holographic lens so that the optical spots are formed on the photo diode. As a result, with one objective lens and photo diode, information of two types of optical disks for laser beams of different wave lengths can be reproduced.

    摘要翻译： 第一和第二激光束源分别产生不同波长的第一和第二激光束。 第一准直透镜将第一激光束以预定角度分开，以便当从第一激光束源产生的第一激光束收集在信号层上时，允许第一激光束的断裂表面像差降至预定值以下 的光盘。 光接收透镜以预定尺寸的光点的形式收集从光盘的信号层反射的光电二极管上的激光束。 全息透​​镜具有将第一激光束转换为平行光线的图案，使得第一激光束的光斑的尺寸与投影在检测部上的第二激光束的光斑尺寸相同。 全息透​​镜的图案具有同心环状的凹凸部，在该同心环状的凹凸部中配置有多个环状突起和凹部，凹部和凸部的宽度从同心的中心向最外周逐渐减小 环形凹凸部。 此外，每个凸起的内表面具有形成有至少一个台阶的台阶状。 优选地，步数为3至5。 因此，当激光束透射通过全息透镜时，两个不同波长的激光束的光点的直径几乎相同，使得光斑形成在光电二极管上。 结果，利用一个物镜和光电二极管，可以再现不同波长的激光束的两种类型的光盘的信息。